book_admin/application/admin/controller/manage/Cover.php

<?php

namespace app\admin\controller\manage;

use app\common\controller\Backend;
use think\Controller;
use think\Request;

/**
 * 运营管理-封面管理
 *
 * @icon fa fa-circle-o
 */
class Cover extends Backend
{

    /**
     * ManageCover模型对象
     */
    protected $model = null;

    public function _initialize()
    {
        parent::_initialize();
        $this->model = model('ManageCover');
        $this->view->assign("statusList", $this->model->getStatusList());
        $this->view->assign("sexList", $this->model->getSexList());
        $this->view->assign("typeList", $this->model->getTypeList());
    }

    /**
     * 查看
     */
    public function index()
    {
        //设置过滤方法
        $this->request->filter(['strip_tags']);
        if ($this->request->isAjax())
        {
            //如果发送的来源是Selectpage，则转发到Selectpage
            if ($this->request->request('pkey_name'))
            {
                return $this->selectpage();
            }
            list($where, $sort, $order, $offset, $limit) = $this->buildparams();
            $whereArr = [];
            if (strtolower($this->request->action()) == 'select') {
                $whereArr[] = ['status', '=', 'normal'];
                $whereArr = function($query) use ($whereArr) {
                    foreach ($whereArr as $k => $v)
                    {
                        if (is_array($v))
                        {
                            call_user_func_array([$query, 'where'], $v);
                        }
                        else
                        {
                            $query->where($v);
                        }
                    }
                };
            }
            $total = $this->model
                ->where($where)
                ->where($whereArr)
                ->order($sort, $order)
                ->count();

            $list = $this->model
                ->where($where)
                ->where($whereArr)
                ->order($sort, $order)
                ->limit($offset, $limit)
                ->select();
            $result = array("total" => $total, "rows" => $list);

            return json($result);
        }
        return $this->view->fetch();
    }

    /**
     * 选择封面图片
     */
    public function select()
    {
        if ($this->request->isAjax()) {
            return $this->index();
        }
        return $this->view->fetch();
    }

    /**
     * ajax方法转发index，用于渠道商/代理商API请求
     * @return string|\think\response\Json
     */
    public function ajax()
    {
        return $this->index();
    }
}